Run JavaScript passed in via form data.

Ok I am in SAP.

SAP populates some hidden fields. 

so now the field, well say fieldX has the rawValue = sectionX.fieldY.presence = "open"'

xfa.host.messageBox("test " + fieldX.rawValue);

********popup says************************************

test sectionX.fieldY.presence = "open";

***********************************************************

Now I want to take this code in fieldX and actually make it run. 

I was doing this in a scriptObject section I created.  The function I created sees the value of fieldX, but I don't know how to make it run the code stored in fieldX.

thoughts?